CN102444598B - Fan rotation speed control apparatus and method - Google Patents
Fan rotation speed control apparatus and method Download PDFInfo
- Publication number
- CN102444598B CN102444598B CN201010298203.5A CN201010298203A CN102444598B CN 102444598 B CN102444598 B CN 102444598B CN 201010298203 A CN201010298203 A CN 201010298203A CN 102444598 B CN102444598 B CN 102444598B
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- China
- Prior art keywords
- signal
- ibmc
- chip
- fan
- shifter
- Prior art date
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- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
- G06F1/206—Cooling means comprising thermal management
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
- H05K7/20727—Forced ventilation of a gaseous coolant within server blades for removing heat from heat source
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20836—Thermal management, e.g. server temperature control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
Fan rotation speed control apparatus and a method when server start, the method comprising the steps of: (a) IBMC chip produces Continuity signal start signal generator, and signal shifter is switched on signal buffer; (b) signal generator produces the first pwm signal, and the first pwm signal is sent to signal shifter; (c) signal shifter is according to the first pwm signal control rotation speed of the fan; (d) judge whether IBMC chip normally works; (e), when IBMC chip is not normally worked, execution step (b) is to (d); (f), when IBMC chip is normally worked, IBMC chip produces shutdown signal generator, and signal shifter is switched on IBMC chip; (g) IBMC chip produces the second pwm signal and is sent to signal shifter; (h) signal shifter is according to the second pwm signal control rotation speed of the fan. Implement the present invention, can solve the waste of energy and the noise pollution that in the time that server is started shooting, cause because rotation speed of the fan is too fast.
Description
Technical field
The present invention relates to fan rotation speed control apparatus and method in a kind of computer system, particularly closeFan rotation speed control apparatus and method in the time of a kind of server start.
Background technology
Server (Server) platform uses integrated baseboard management controller (Integrated conventionally at presentBaseboardManagementController, is called for short IBMC chip) carry out the system to serverState is detected, and the system fan of server is controlled. IBMC chip is by detectingThe system temperature of server regulate fan pulse width modulation (PulseWidthModulation,PWM) signal, thus reach the object of control system rotation speed of the fan. In the use of server systemIn process, be loaded into when plugging on IBMC chip, IBMC chip is normally started workingUsually need the time of tens seconds, for example the time about 20 seconds. If pressed within this period of timeLower start button carries out boot action, due to the now abnormal work of IBMC chip, so fanCan rotate at full speed. For server system now, owing to just starting shooting, system fan does not need entirelySpeed is rotated provides heat radiation. And system fan is rotated and can be caused certain waste to electric energy at full speed, simultaneouslyLikely produce excessive electric current server system is caused to certain impact. In addition, system fan is completeSpeed is rotated and also can be produced large unnecessary noise pollution, is unfavorable for energy-conservation and environmental protection.
Summary of the invention
In view of above content, the fan rotation speed control apparatus while being necessary to provide a kind of server start andMethod, for solving in the time that server is started shooting due to the too fast waste of energy causing of rotating speed of fan andProblem of noise pollution.
Described fan rotation speed control apparatus comprises IBMC chip, signal generator, signal bufferAnd signal shifter, this IBMC chip comprises GPIO pin and signal output part. DescribedIBMC chip judges IBMC core for IBMC chip by the state value that detects GPIO pinWhether sheet starts normal work, and in the time that IBMC chip is not normally started working, IBMC chip producesA raw Continuity signal start signal generator, and cut according to this Continuity signal control signal switchChange on signal buffer. Described signal generator is for generation of the first pwm signal, and passes throughThe first pwm signal is sent to signal shifter by signal buffer. Described IBMC chip is also usedIn in the time that IBMC chip starts normally to work, produce a shutdown signal shutdown signal generator, rootAccording to this shutdown signal, signal shifter is switched on IBMC chip, and produces the 2nd PWM letterNumber and this second pwm signal is sent to signal shifter by signal output part. Described signalSwitch is for controlling the rotating speed of fan according to the first pwm signal or the second pwm signal.
Described fan rotational frequency control method comprises step: (a) IBMC chip produces a conducting letterNumber start signal generator, and be switched to signal buffer according to this Continuity signal control signal switchOn; (b) signal generator produces the first pwm signal, and by signal buffer by a PWMSignal is sent to signal shifter; (c) signal shifter is controlled fan according to the first pwm signalRotating speed; (d) judge by the state value that detects GPIO pin whether IBMC chip just startsNormal work; (e), in the time that IBMC chip is not normally started working, continue execution step (b) extremely(d); (f), in the time that IBMC chip starts normally to work, IBMC chip produces a shutdown signalShutdown signal generator, and according to this shutdown signal, signal shifter is switched on IBMC chip;(g) IBMC chip produces the second pwm signal and this second pwm signal is exported by signalEnd is sent to signal shifter; (h) signal shifter is controlled fan according to second pwm signalRotating speed.
Compared to prior art, fan rotation speed control apparatus of the present invention and method, can be at clothesWhen the IBMC chip of business device system is not normally worked, the pwm signal being produced by signal generatorRotating speed to fan is controlled, and in the time that IBMC chip is normally worked, is produced by IBMC chipPwm signal the rotating speed of fan is controlled, thereby solved in the time that server is started shooting due to windThe too fast waste of energy causing of rotating speed and the problem of noise pollution of fan.
Brief description of the drawings
The framework of fan rotation speed control apparatus preferred embodiment when Fig. 1 is server start of the present inventionFigure.
The flow process of fan rotational frequency control method preferred embodiment when Fig. 2 is server start of the present inventionFigure.
Main element symbol description
Fan rotation speed control apparatus 1
IBMC chip 11
GPIO pin 110
Signal output part 112
Signal generator 12
Signal buffer 13
Signal shifter 14
Fan 2
Detailed description of the invention
As shown in Figure 1, the better enforcement of fan rotation speed control apparatus 1 while being server start of the present inventionThe Organization Chart of example. In the present embodiment, this fan rotation speed control apparatus 1 comprises IBMC (IntegratedBaseboardManagementController, integrated baseboard management controller) chip 11, signalGenerator 12, signal buffer 13 and signal shifter 14. This IBMC chip 11 comprisesGPIO pin (GeneralPurposeI/Opin) 110 and signal output part 112. Wherein, IBMCChip 11 is connected with signal shifter 14 with signal generator 12 respectively by GPIO pin 110Connect, signal generator 12 is connected with signal shifter 14 by signal buffer 13, this signalSwitch 14 is connected with fan 2.
Described fan rotation speed control apparatus 1 can be at IBMC chip 11 when normal work,Produce the first pulse width modulation (PulseWidthModulation, PWM) by signal generator 12Signal is controlled the rotating speed of fan 2, and in the time of the 11 normal work of IBMC chip, by IBMCChip 11 produces the second pwm signal the rotating speed of fan 2 is controlled, thereby solves in serviceIn device when start, is due to the too fast waste of energy causing of rotating speed and the problem of noise pollution of fan 2. DescribedThe first pwm signal be a kind of pulse width modulating signal for reducing rotation speed of the fan dutycycle,For example have 50% rotation speed of the fan dutycycle, fan 2 turns round under this first pwm signal, canReduce the rotating speed of fan 2. The second described pwm signal is a kind of for increasing rotation speed of the fan dutyThe pulse width modulating signal of ratio, for example, have 100% rotation speed of the fan dutycycle, and fan 2 turns at thisUnder the pwm signal of speed dutycycle, turn round, can improve rotation speed of the fan.
Described IBMC chip 11 is for judging by the state value that detects GPIO pin 110Whether IBMC chip 11 itself starts normal work. In the present embodiment, when after server energisingBefore normally starting working to IBMC chip 11, GPIO pin 110 have one low levelDefault conditions value (representing with data signal " 0 "), in the time that IBMC chip 11 starts normal work,The state value of GPIO pin 110 is changed into high level state value from low level state value and (is believed with numeralNumber " 1 " represents).
Described IBMC chip 11 is also in the time that IBMC chip 11 is normally started working,Produce a Continuity signal start signal generator according to the low level state value of GPIO pin 11012, and be switched on signal buffer 13 according to this Continuity signal control signal switch 14. WhenWhen IBMC chip 11 starts normal work, IBMC chip 11 is according to the height of GPIO pin 110Level state value produces a shutdown signal and carrys out shutdown signal generator 12, and according to this shutdown signalSignal shifter 14 is switched on IBMC chip 11.
Described IBMC chip 11 is also for producing the 2nd PWM according to the system temperature of serverSignal, and this second pwm signal is sent to signal shifter 14 by signal output part 112.
Described signal generator 12 is for generation of the first pwm signal, and passes through signal bufferThe first pwm signal is sent to signal shifter 14 by 13. Described signal buffer 13 is for inciting somebody to actionThe first pwm signal carries out signal and amplifies rear transmitted signal switch 14.
Described signal shifter 14 is in the time that IBMC chip 11 is normally started working, rootControl the rotating speed of fan 2 according to the first pwm signal, and normally start when IBMC chip 11When work, control the rotating speed of fan 2 according to the second pwm signal.
As shown in Figure 2, the fan rotational frequency control method preferred embodiment while being server start of the present inventionFlow chart. What in the present embodiment, this fan rotational frequency control method can be at server systemWhen IBMC chip 11 is not normally worked, the pwm signal being produced by signal generator 12 is to windThe rotating speed of fan 2 is controlled, in the time of the 11 normal work of IBMC chip, by IBMC chip 11Produce pwm signal the rotating speed of fan 2 is controlled, thereby solve in the time that server is started shooting byIn the too fast waste of energy causing of rotating speed and the problem of noise pollution of fan 2.
Step S201, the power knob that user presses server system carries out IBMC chip 11Energising. Conventionally,, for a server system, after to server energising, approximately need 20 secondsThe time IBMC chip 11 of clock could normally be started working.
Step S202, IBMC chip 11 produces according to the low level state value of GPIO pin 110A Continuity signal start signal generator 12, and according to this Continuity signal control signal switch 14Be switched on signal buffer 13. In the present embodiment, when server is energized to IBMC chip 11Before normally starting working, the GPIO pin 110 of IBMC chip 11 have one low levelDefault conditions value, IBMC chip 11 produces a start signal generator by this default conditions value12 Continuity signal.
Step S203, signal generator 12 produces the first pwm signal, and passes through signal buffer13 will be sent to signal shifter 14 after the first pwm signal amplification. This first pwm signal isFor reducing a pulse width modulating signal for rotation speed of the fan dutycycle, for example, there is 50% fan and turnSpeed dutycycle, fan 2 turns round under this first pwm signal, can reduce the rotating speed of fan 2.
Step S204, signal shifter 14 is controlled the rotating speed of fan 2 according to the first pwm signal,Make fan 2 provide heat radiation taking lower rotating speed as server in server start process, thereby avoidThe waste of energy causing because of the full-speed operation of fan 2 and produce larger noise pollution.
Step S205, IBMC chip 11 judges by the state value that detects GPIO pin 110Whether IBMC chip 11 starts normal work. In the start process of server, when giving serverSupply power to IBMC chip 11 and normally start working and usually need tens second time, for example, about 20 secondsTime. When after during this period of time, IBMC chip 11 is by the state value of GPIO pin 110Change into high level state value from low level state value. Originally IBMC chip 11 in the present embodiment,The state value that GPIO pin 110 detected is high level, and definite IBMC chip 11 has been openedBegin normally to work. In the time that IBMC chip 11 does not start normally to work, return to step S203; WhenWhen IBMC chip 11 starts normal work, execution step S206.
Step S206, IBMC chip 11 produces according to the high level state value of GPIO pin 110A shutdown signal is carried out shutdown signal generator 12, and according to this shutdown signal by signal shifter 14Be switched on IBMC chip 11.
Step S207, IBMC chip 11 produces the 2nd PWM letter according to the system temperature of serverNumber, and this second pwm signal is sent to signal shifter 14 by signal output part 112.This second pwm signal is a kind of pulse width modulating signal for increasing rotation speed of the fan dutycycle,For example have 100% rotation speed of the fan dutycycle, fan 2 is under the pwm signal of this rotating speed dutycycleRunning, can improve rotation speed of the fan.
Step S208, signal shifter 14 is controlled turning of fan 2 according to this second pwm signalSpeed, makes fan 2 provide heat radiation taking higher rotating speed as server in server course of normal operation.Because this second pwm signal is to produce according to the system temperature height of server, therefore fan2 can be because of the variation self-regulating rotary speed of system temperature according to this second pwm signal.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although reference aboveGood embodiment has been described in detail the present invention, and those of ordinary skill in the art should be appreciated that canShould not depart from technical solution of the present invention technical scheme of the present invention is modified or be equal to replacementSpirit and scope.
Claims (10)
1. the fan rotation speed control apparatus in server when start, comprises that IBMC chip, signal send outRaw device, signal buffer and signal shifter, this IBMC chip comprises GPIO pin and letterNumber output, is characterized in that:
Described IBMC chip is for judging IBMC core by the state value that detects GPIO pinWhether sheet starts normal work, in the time that IBMC chip does not start normally to work, produces a conductingUnblanking signal generator, and it is slow to be switched to signal according to this Continuity signal control signal switchRush on device;
Described signal generator, in the time that IBMC chip does not start normally to work, produces firstPwm signal, and by signal buffer, the first pwm signal is sent to signal shifter;
Described IBMC chip, also in the time that IBMC chip starts normally to work, produces a passClose signal at stop signal generator, according to this shutdown signal, signal shifter is switched to IBMC chipUpper, and produce the second pwm signal and by this second pwm signal by signal output part transmissionTo signal shifter;
Described signal shifter is not in the time that IBMC chip starts normally to work, according to signalThe first pwm signal that generator produces is controlled the rotating speed of fan, when IBMC chip starts normallyWhen work, the second pwm signal producing according to IBMC chip is controlled the rotating speed of fan.
2. fan rotation speed control apparatus as claimed in claim 1, is characterized in that, described IBMCChip produces described Continuity signal according to the low level state value of GPIO pin, and according to GPIOThe high level state value of pin produces described shutdown signal.
3. fan rotation speed control apparatus as claimed in claim 1, is characterized in that, described letterNumber buffer is for carrying out the first pwm signal to be sent to signal shifter after signal amplification.
4. the fan rotation speed control apparatus as described in claim 1 or 3, is characterized in that, described inThe first pwm signal be a kind of pulse width modulating signal for reducing rotation speed of the fan dutycycle.
5. fan rotation speed control apparatus as claimed in claim 1, is characterized in that, describedTwo pwm signals are a kind of pulse width modulating signals for increasing rotation speed of the fan dutycycle.
6. fan rotational frequency control method when server is started shooting, utilizes IBMC chip, signalGenerator, signal buffer and signal shifter are controlled the rotation speed of the fan of server, this IBMCChip comprises GPIO pin and signal output part, it is characterized in that, the method comprising the steps of:
(a) IBMC chip produces a Continuity signal start signal generator, and according to this conducting letterNumber control signal switch is switched on signal buffer;
(b) signal generator produces the first pwm signal, and by signal buffer by a PWMSignal is sent to signal shifter;
(c) signal shifter is controlled the rotating speed of fan according to the first pwm signal;
(d) judge by the state value that detects GPIO pin whether IBMC chip starts normal workDo;
(e) in the time that IBMC chip does not start normally to work, continue to perform step (b)-(d),Be that the first pwm signal that signal shifter continues to produce according to signal generator is controlled turning of fanSpeed;
(f), in the time that IBMC chip starts normally to work, IBMC chip produces a shutdown signal and closesClose signal generator, and according to this shutdown signal, signal shifter is switched on IBMC chip;
(g) IBMC chip produces the second pwm signal and this second pwm signal is passed through to signalOutput is sent to signal shifter;
(h) the second pwm signal that signal shifter produces according to IBMC chip is controlled fanRotating speed.
7. fan rotational frequency control method as claimed in claim 6, is characterized in that, described IBMCChip produces described Continuity signal according to the low level state value of GPIO pin, and according to GPIOThe high level state value of pin produces described shutdown signal.
8. fan rotational frequency control method as claimed in claim 6, is characterized in that, described letterNumber buffer carries out the first pwm signal to be sent to signal shifter after signal amplification.
9. the fan rotational frequency control method as described in claim 6 or 8, is characterized in that, described inThe first pwm signal be a kind of pulse width modulating signal for reducing rotation speed of the fan dutycycle.
10. fan rotational frequency control method as claimed in claim 6, is characterized in that, describedTwo pwm signals are a kind of pulse width modulating signals for increasing rotation speed of the fan dutycycle.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010298203.5A CN102444598B (en) | 2010-09-30 | 2010-09-30 | Fan rotation speed control apparatus and method |
| US13/030,137 US8421392B2 (en) | 2010-09-30 | 2011-02-18 | Apparatus and method for controlling speed of fan in computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010298203.5A CN102444598B (en) | 2010-09-30 | 2010-09-30 | Fan rotation speed control apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102444598A CN102444598A (en) | 2012-05-09 |
| CN102444598B true CN102444598B (en) | 2016-05-04 |
Family
ID=45889225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010298203.5A Expired - Fee Related CN102444598B (en) | 2010-09-30 | 2010-09-30 | Fan rotation speed control apparatus and method |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US8421392B2 (en) |
| CN (1) | CN102444598B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797691A (en) * | 2011-05-27 | 2012-11-28 | 鸿富锦精密工业（深圳）有限公司 | Fan control circuit |
| CN102808795A (en) * | 2011-05-30 | 2012-12-05 | 鸿富锦精密工业（深圳）有限公司 | Fan control circuit |
| CN102817824A (en) * | 2011-06-08 | 2012-12-12 | 鸿富锦精密工业（深圳）有限公司 | Fan testing method and system |
| TWI499897B (en) * | 2012-04-13 | 2015-09-11 | Quanta Comp Inc | Computer device and method of heat dissipating its discrete graphic process unit of the same |
| CN103807195A (en) * | 2012-11-07 | 2014-05-21 | 英业达科技有限公司 | Fan control device |
| CN103807199B (en) * | 2012-11-14 | 2016-03-30 | 中山市云创知识产权服务有限公司 | Fan control circuitry |
| CN103821745B (en) * | 2012-11-16 | 2016-08-10 | 英业达科技有限公司 | Fan control device |
| CN103838655B (en) * | 2012-11-20 | 2016-09-14 | 英业达科技有限公司 | Computer system and control method thereof |
| CN103850969A (en) * | 2014-03-07 | 2014-06-11 | 山东超越数控电子有限公司 | Intelligent control method suitable for server fan in private cloud system under low-temperature environment |
| CN104154020B (en) * | 2014-08-13 | 2016-08-31 | 浪潮电子信息产业股份有限公司 | A kind of method for designing of intelligent control server start-up noises |
| CN106455416A (en) * | 2016-08-29 | 2017-02-22 | 安徽皖通邮电股份有限公司 | Device for controlling electronic device fun starting noise |
| WO2018152762A1 (en) * | 2017-02-24 | 2018-08-30 | 华为技术有限公司 | Terminal radiator device and noise control method |
| CN107191406B (en) * | 2017-07-26 | 2019-07-26 | 郑州云海信息技术有限公司 | A kind of system and method for start process reducing fan noise sound |
| CN107957765A (en) * | 2017-12-12 | 2018-04-24 | 曙光信息产业股份有限公司 | Fan speed-governing method, device and blade server |
| CN109058148B (en) * | 2018-09-27 | 2021-02-26 | 苏州浪潮智能科技有限公司 | Circuit and method for switching fan control through single-node and double-node configuration |
| CN109681456A (en) * | 2018-12-28 | 2019-04-26 | 郑州云海信息技术有限公司 | A kind of fan control device and method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102444598A (en) | 2012-05-09 |
| US20120081056A1 (en) | 2012-04-05 |
| US8421392B2 (en) | 2013-04-16 |
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